Mk 4 golf 1.8 turbo engine conversion, non start

[richscriv]

Hi this is my 1st post, I am in need of serious help guys, any ideas welcome. the story goes:
I started off with a 2002 golf 1.4 16v, I required a gti 1.8 turbo which was not in good condition, so my idea was to put the 1.8t in my 1.4 golf. I have swapped the:
engine
exhaust
ecu
wiring ect
when completing the car wouldn't start due to the immobiliser kicking in, I contacted VW dealer who said the keys need to be re-coded to the ECU.
I took the car to VW who then coded the keys in and the engine ran fine, and all drove fine.
after driving for about 10 mins, the engine cut out and wont start, it cranks but no start. when cranking theres no fuel froom the fuel pump, cant here the pump going, tried reading ecu with code reader, and is unable to communicate. I have checked fuses and all ok, I am stumped... the brief time it drove it drove fine, no warning lights ect all ok.
ANY IDEAS, PLEASE HELP, CHEERS

[gazareth]

did you swap the fuel pump over. not certain if you have to but just a thought. I would check for power to it anyway.

[richscriv]

probs the next thing ill do, I thought if the fault was due to the conversion it would have faulted before driving, but the fact it drove ok has thrown me, also with the ecu not responding I didn't know if for some reason it had shut down, and or if there is some sort of ecu fuse, cheers